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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Thromb+Haemost
2014 ; 12
(6
): 860-70
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Neutrophil extracellular traps form predominantly during the organizing stage of
human venous thromboembolism development
#MMPMID24674135
Savchenko AS
; Martinod K
; Seidman MA
; Wong SL
; Borissoff JI
; Piazza G
; Libby P
; Goldhaber SZ
; Mitchell RN
; Wagner DD
J Thromb Haemost
2014[Jun]; 12
(6
): 860-70
PMID24674135
show ga
BACKGROUND: A growing health problem, venous thromboembolism (VTE), including
pulmonary embolism (PE) and deep vein thrombosis (DVT), requires refined
diagnostic and therapeutic approaches. Neutrophils contribute to thrombus
initiation and development in experimental DVT. Recent animal studies recognized
neutrophil extracellular traps (NETs) as an important scaffold supporting
thrombus stability. However, the hypothesis that human venous thrombi involve
NETs has not undergone rigorous testing. OBJECTIVE: To explore the cellular
composition and the presence of NETs within human venous thrombi at different
stages of development. PATIENTS AND METHODS: We examined 16 thrombi obtained from
11 patients during surgery or at autopsy using histomorphological,
immunohistochemical and immunofluorescence analyses. RESULTS: We classified
thrombus regions as unorganized, organizing and organized according to their
morphological characteristics. We then evaluated them, focusing on neutrophil and
platelet deposition as well as micro-vascularization of the thrombus body. We
observed evidence of NET accumulation, including the presence of citrullinated
histone H3 (H3Cit)-positive cells. NETs, defined as extracellular diffuse H3Cit
areas associated with myeloperoxidase and DNA, localized predominantly during the
phase of organization in human venous thrombi. CONCLUSIONS: NETs are present in
organizing thrombi in patients with VTE. They are associated with thrombus
maturation in humans. Dissolution of NETs might thus facilitate thrombolysis.
This finding provides new insights into the clinical development and pathology of
thrombosis and provides new perspectives for therapeutic advances.